Decided to change my oil and filter today (Jk 3.
![Cool](http://www.ausjeepoffroad.com/forum/images/smiles/icon_cool.gif)
. It's been 10 months since my last dealer service. Cracked out my tools and tried to undo the sump plug. Using a 13mm snap on socket it skipped a notch. Got out an imperial spanner which seemed to fit.
The problem is it still won't budge. It feels as though some Muppet at the dealer has hung off a breaker bar doing it up.
I rang the dealer workshop and asked them to confirm if it was metric or imperial. The response was "I think it's imperial because it's American".
WTF?? I think?
Can anyone confirm?
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